Left home just after 7 AM- it was cool and crystal clear. Up through Montereale Valcellina, and the 4km-long tunnel to Barcis. The town workers were sprucing up everything for the Giro stage. Looks like the route will backtrack over the dam rather than crossing the narrow suspension bridge at the north end of the lake- should be safer.
Up the Valcellina to Passo di Sant'Osvaldo at 827m, then down through Erto, alongside Lago di Vajont and the huge landslide of Mt Toc, which caused a tsunami that overtopped the dam and obliterated Longarone below.
After Longarone (473m) the road turns upward again, through a tunnel and then along the gorge of Torrente Maè, climbing though beautiful forest, surrounded by Dolomiti peaks. Below Forno di Zoldo is the turn off for Forcella Cibiana and another for Zoppè di Cadore. But there was no way I could do them- it had taken me 4 hours to get here. Plus I was feeling beat. So at the top of Forno di Zoldo (a tourist village at 870m) I turned around.
The ride home has mostly downhill slopes, except for Longarone to Passo di Sant'Osvaldo, so I made better time- 3 hours instead of 4.
Looks like the climbs in Dolomiti Bellunesi are too far away to ride from home. I'll need to drive closer to the start of the climb next time.